Filament Dry Box IKEA Samla 22L

prusaprinters

<p>I tried many different approaches from building my own (expensive) filament box with aluminum extrusions and sealed acrylic glass to single Rubbermaid boxes with humidity sensor and Silca gel.</p><p>This is now the one I settled for and I am quite happy with the cost / performance. It is a modular approach to creating an affordable DryBox that fits four 1kg Prusament Spools but also larger (2+kg) or slimmer (samples, etc…) ones.</p><p>I tried to print as many parts as possible to reduce part sourcing.&nbsp;</p><p><strong>Minimum Configuration:</strong></p><p>1× <strong>IKEA Samla 22L Box</strong> with Lid</p><p>2× <strong>8mm Threaded Rods</strong> (320mm each)</p><p>16× <strong>608ZZ Bearings</strong> (ABEC7 or above)</p><p>4×<strong> E3D Threaded Bowden </strong>or <strong>PC4-M10 Coupling&nbsp;</strong></p><p>4x <strong>PTFE Transparent Tube </strong>(4/3mm OD/ID)&nbsp;</p><p>You could save on the bearings and just print the circular spool holders but I wanted to have that added smooth rotation. For the filament exits I still had a lot of E3D PTFE Couplings laying around from my previous attempts with the Rubbermaids. But I figured standart and cheaper PC4-M10 couplings also work. For the future I want to design a printable solution that works without purchasing parts but for now that works great. &nbsp;&nbsp;</p><p>I also added an <strong>AQARA Humidity &amp; Temperature Sensor</strong> (Zigbee) with custom slide-in mount. I have this integrated in my home assistant dashboard alongside with Octoprint via MQTT. I find this solution better now then the simpler circular humidity sensors you can also find on various dryboxes. I noticed it seems to be also much more precise.</p><p>Printing should be very straight forward. I used <strong>Signal White PETG Prusament</strong> with mostly the standard print settings. For the Threaded Couplings I would advise 0.1mm resolution or recut afterwards with an BSP G 1/8-28 or M10 thread cutter.&nbsp;</p><p>If you would like to have additional airtight sealing use rubber seals on the lid and print the additional pressure fit clips to hold the lid tight. 4 clips should be sufficient.</p><p>Silca Gel can be added on fine-meshed bags on the bottom of the box to further reduce humidty. I picked up some from amazon (33 x 25 cm) which fit perfectly.</p><p><strong>All .3mf Files have a suffix (_xNUMBER) to show how many of them need to be printed.</strong></p><p><strong>Next Updates:</strong></p><p><strong>+</strong> Design custom clips for the end of the PTFE Tubes when the filaments exists to add the final air seal&nbsp;</p><p><strong>+</strong> Release Fusion360 Source Files for customizations (after cleanup ;)</p><p>&nbsp;</p>